import { reqCartList, reqDeleteCartById, reqUpdateCheckedById } from '@/api/index'
const state = {
  cartList: []
}
const mutations = {
  GETCARTLIST(state, cartList) {
    state.cartList = cartList
  }
}
const actions = {
  // 获取购物车列表的数据
  async getCartList({ commit }) {
    let result = await reqCartList()
    if (result.code == 200) {
      commit('GETCARTLIST', result.data)
    }
  },
  // 删除购物车某一个产品
  async deleteCartListBySkuId({ commit }, skuId) {
    let result = await reqDeleteCartById(skuId)
    if (result.code == 200) {
      return "ok"
    } else {
      return Promise.reject(new Error('faile'))
    }
  },
  // 更改产品的选中状态
  async updateCheckedById({ commit }, { skuId, isChecked }) {
    let result = await reqUpdateCheckedById(skuId, isChecked)
    if (result.code == 200) {
      return 'ok'
    } else {
      return Promise.reject(new Error('faili'))
    }
  },
  //删除选择的产品
  deleteAllCheckedCart({ dispatch, getters }) {
    // context：小仓库，除了commit[提交mutation，修改state]，getters[计算属性] dispatch[派发action] state[当前仓库数据]
    // 获取购物车的全部产品(是数据)
    let PromiseAll = []
    getters.cartList.cartInfoList.forEach(item => {
      let promise = item.isChecked == 1 ? dispatch('deleteCartListBySkuId', item.skuId) : ''
      // 将每一次返回的Promise添加到数组当中
      PromiseAll.push(promise)
    })
    // 只要全部的p1|p2|p3....都成功，返回结果为成功
    // 如果有一个失败，返回的即为失败结果

    return Promise.all(PromiseAll)
  },
  // 删除全部商品
  deleteAllCart({dispatch,getters}){
    getters.cartList.cartInfoList.forEach(item=>{
      dispatch('deleteCartListBySkuId',item.skuId)
    })
  },
  // 修改全部产品的状态选项
  updateAllCartIschecked({ dispatch, state }, isChecked) {
    let promiseAll = []

    state.cartList[0].cartInfoList.forEach(item => {
      let promise = dispatch('updateCheckedById', { skuId: item.skuId, isChecked })
      promiseAll.push(promise)
    })
    // 最终返回结果
    return Promise.all(promiseAll)
  }
}
const getters = {
  cartList(state) {
    return state.cartList[0] || {}
  },
}
export default { state, mutations, actions, getters }